QuickLogic (QUIK) -9.1% AH after warning it expects to report Q4 revenue of $3.1M, below prior guidance of $3.4M (+/- 10%). No explanation is given for the shortfall. Bigger rival Altera (ALTR) lowered its guidance last month. Altera, Xilinx (XLNX), and Lattice Semi (LSCC) could trade lower following the warning.